中国塑料 ›› 2017, Vol. 31 ›› Issue (7): 30-34 .DOI: 10.19491/j.issn.1001-9278.2017.07.006

• 材料与性能 • 上一篇    下一篇

一种高性能轻质环氧树脂纳米复合材料的研究

李曦   

  1. 海军工程大学理学院化学与材料系
  • 收稿日期:2017-01-20 修回日期:2017-04-12 出版日期:2017-07-26 发布日期:2017-07-26

Study on High-performance Lightweight Epoxy Nanocomposites

  • Received:2017-01-20 Revised:2017-04-12 Online:2017-07-26 Published:2017-07-26

摘要: 将有机蒙脱土(OMMT)和纳米TiO2添加到环氧树脂(EP)中, 制备了EP/OMMT/纳米TiO2复合材料,通过扫描电子显微镜、透射电子显微镜、X射线衍射仪、综合热分析仪及万能试验机等对复合材料的微观结构、热稳定性能及力学性能等进行了研究与表征。结果表明,复合材料中OMMT的层状结构被完全分解为二维纳米单片,与零维的纳米TiO2球形成交错结构;当复合纳米填料含量为5 份时,EP/OMMT/纳米TiO2复合材料拉伸模量、拉伸强度、弯曲模量、弯曲强度、缺口冲击强度、玻璃化转变温度、热分解温度分别提高了154.8 %、81.5 %、21.1 %、25.3 %、65.6 %、11.3 ℃和15.3 ℃。

关键词: 有机蒙脱土, 纳米二氧化钛, 环氧树脂, 复合材料

Abstract: Versatile high-performance epoxy nanocomposites were successfully prepared by co-incorporating organo-montmorillonite (OMMT) and TiO2 nanoparticles into the epoxy matrix. The X-ray powder diffraction and transmission electron microscopy characterizations indicated that OMMT layers were highly exfoliated into some of nanoscale OMMT mono-platelets by the strong interaction among the OMMT, TiO2 nanoparticles and epoxy matrix, and the 2-dimensional OMMT mono-platelets obtained an interlacing arrangement with the 0-dimensional TiO2 nanoparticles in the matrix. Mechanical tests and thermal analyses showed that the resulting epoxy/OMMT/TiO2 nanocomposites achieved a considerable improvement in various properties over pure epoxy resin.

Key words: organo-montmorillonite, nano titanium dioxide, epoxy, composite